PeCOD® is a patented technology that directly measures photocurrent/charge
originating from the oxidization of the organic contamination in a test sample.Fastest available COD analysis method
Does not use dichromate and no hazardous waste disposal of reagents
Low cost per sample
Complete oxidation of organic species ensures accuracy and reproducibility
Able to analyse a wide variety of matrices – including high chloride concentrations
Unmatched sensitivity for COD (sub-ppm)
Small footprint requires minimal bench space (235 x 375 mm)
Simple to operate “Click and go” operation
Additional software automation options available
The core of the technology is the PeCOD® sensor, which consists of a UV-activated
nanoparticale TiO2 (titanium dioxide) photocatalyst coupled to an external circuit.
The high electrochemical potential of the TiO2 gives it a substantial advantage
over the modest chemical potential generated by the dichromate method.
The sample is introduced into a microcell containing the sensor. The TiO2 is
irradiated by UV light, and a potential bias is applied. The UV light creates
a photohole in the TiO2 sensor with a very high oxidizing power and organics
in the cell are oxidized. PeCOD® is extremely accurate across a broad range of organics.
The powerful oxidizing potential of UV-illuminated TiO2 ensures that virtually all
species will be fully oxidized giving a true measure of COD.
PeCOD P100 online COD Analyzer
The PECOD online system is able to make measurements in real time on a 15 minute cycle time.
Ranges available from more than 25mg/l up to 15000 mg/l Real time results (less than 15mins ) to overcome the problems of time delays encountered by chemical oxidation methods
Absolute COD measurement avoiding costly and time consuming regular calibration
Complete oxidation leading to high accuracy and high reproducibility minimizing matrix variation problems.
Direct signal acquisition resulting in high sensitivity and wide linear range
No Hazardous reagents
Small footprint & light weight less than 3.5kg makes it ideal for mounting on-line
Splash resistant keypad
Identical technologies across platforms (laboratory and on line unit) ensures consistency of results when switching between the two
In line mixing avoids user intervention for difficult to analyze samples
Unmatched ppb sensitivity (0.2 mg/l) and reproducibility (RSD=±3%)
PeCOD analyzers accurately detect COD in samples from a variety of sources and overcome many
of the problems encountered by existing COD methods.